////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  WjCryptLibTest_Aes
//
//  Tests the cryptography functions against known test vectors to verify algorithms are correct.
//  Tests the following:
//     AES
//
//  This is free and unencumbered software released into the public domain - November 2017 waterjuice.org
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  IMPORTS
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <string.h>
#include <stdbool.h>
#include "WjCryptLib_Aes.h"

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  TYPES
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#define MAX_PLAINTEXT_SIZE      100

typedef struct
{
    uint8_t         PlainText [16];
    uint8_t         Key128 [16];
    uint8_t         CipherText128 [16];
    uint8_t         Key192 [24];
    uint8_t         CipherText192 [16];
    uint8_t         Key256 [32];
    uint8_t         CipherText256 [16];
} TestVector;

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  GLOBALS
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

static TestVector gTestVectors [] =
{
    {
        { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a },
        { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c },
        { 0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97 },
        { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,
          0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b },
        { 0xbd, 0x33, 0x4f, 0x1d, 0x6e, 0x45, 0xf2, 0x5f, 0xf7, 0x12, 0xa2, 0x14, 0x57, 0x1f, 0xa5, 0xcc },
        { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
          0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 },
        { 0xf3, 0xee, 0xd1, 0xbd, 0xb5, 0xd2, 0xa0, 0x3c, 0x06, 0x4b, 0x5a, 0x7e, 0x3d, 0xb1, 0x81, 0xf8 },
    },
    {
        { 0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51 },
        { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c },
        { 0xf5, 0xd3, 0xd5, 0x85, 0x03, 0xb9, 0x69, 0x9d, 0xe7, 0x85, 0x89, 0x5a, 0x96, 0xfd, 0xba, 0xaf },
        { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,
          0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b },
        { 0x97, 0x41, 0x04, 0x84, 0x6d, 0x0a, 0xd3, 0xad, 0x77, 0x34, 0xec, 0xb3, 0xec, 0xee, 0x4e, 0xef },
        { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
          0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 },
        { 0x59, 0x1c, 0xcb, 0x10, 0xd4, 0x10, 0xed, 0x26, 0xdc, 0x5b, 0xa7, 0x4a, 0x31, 0x36, 0x28, 0x70 },
    },
    {
        { 0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef },
        { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c },
        { 0x43, 0xb1, 0xcd, 0x7f, 0x59, 0x8e, 0xce, 0x23, 0x88, 0x1b, 0x00, 0xe3, 0xed, 0x03, 0x06, 0x88 },
        { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,
          0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b },
        { 0xef, 0x7a, 0xfd, 0x22, 0x70, 0xe2, 0xe6, 0x0a, 0xdc, 0xe0, 0xba, 0x2f, 0xac, 0xe6, 0x44, 0x4e },
        { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
          0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 },
        { 0xb6, 0xed, 0x21, 0xb9, 0x9c, 0xa6, 0xf4, 0xf9, 0xf1, 0x53, 0xe7, 0xb1, 0xbe, 0xaf, 0xed, 0x1d },
    },
    {
        { 0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 },
        { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c },
        { 0x7b, 0x0c, 0x78, 0x5e, 0x27, 0xe8, 0xad, 0x3f, 0x82, 0x23, 0x20, 0x71, 0x04, 0x72, 0x5d, 0xd4 },
        { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,
          0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b },
        { 0x9a, 0x4b, 0x41, 0xba, 0x73, 0x8d, 0x6c, 0x72, 0xfb, 0x16, 0x69, 0x16, 0x03, 0xc1, 0x8e, 0x0e },
        { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,
          0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 },
        { 0x23, 0x30, 0x4b, 0x7a, 0x39, 0xf9, 0xf3, 0xff, 0x06, 0x7d, 0x8d, 0x8f, 0x9e, 0x24, 0xec, 0xc7 },
    },
};

#define NUM_TEST_VECTORS ( sizeof(gTestVectors) / sizeof(gTestVectors[0]) )

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  EXPORTED FUNCTIONS
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//  TestAes
//
//  Test AES algorithm against test vectors
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
bool
    TestAes
    (
        void
    )
{
    uint32_t    i;
    AesContext  context;
    bool        success = true;
    uint8_t     decBlock128 [16];
    uint8_t     encBlock128 [16];
    uint8_t     decBlock192 [16];
    uint8_t     encBlock192 [16];
    uint8_t     decBlock256 [16];
    uint8_t     encBlock256 [16];

    for( i=0; i<NUM_TEST_VECTORS; i++ )
    {
        AesInitialise( &context, gTestVectors[i].Key128, AES_KEY_SIZE_128 );
        AesEncrypt( &context, gTestVectors[i].PlainText, encBlock128 );
        AesDecrypt( &context, gTestVectors[i].CipherText128, decBlock128 );

        AesInitialise( &context, gTestVectors[i].Key192, AES_KEY_SIZE_192 );
        AesEncrypt( &context, gTestVectors[i].PlainText, encBlock192 );
        AesDecrypt( &context, gTestVectors[i].CipherText192, decBlock192 );

        AesInitialise( &context, gTestVectors[i].Key256, AES_KEY_SIZE_256 );
        AesEncrypt( &context, gTestVectors[i].PlainText, encBlock256 );
        AesDecrypt( &context, gTestVectors[i].CipherText256, decBlock256 );

        if(     memcmp( encBlock128, &gTestVectors[i].CipherText128, 16 ) == 0
            &&  memcmp( decBlock128, &gTestVectors[i].PlainText, 16 ) == 0
            &&  memcmp( encBlock192, &gTestVectors[i].CipherText192, 16 ) == 0
            &&  memcmp( decBlock192, &gTestVectors[i].PlainText, 16 ) == 0
            &&  memcmp( encBlock256, &gTestVectors[i].CipherText256, 16 ) == 0
            &&  memcmp( decBlock256, &gTestVectors[i].PlainText, 16 ) == 0 )
        {
            // Test vector passed
        }
        else
        {
            printf( "TestAes - Test vector %u failed\n", i );
            success = false;
        }
    }

    return success;
}
